تاثیر ماده پلی دی متیل سیلوکسان (PDMS) بر پوشش سیلیکا تولید شده به روش سل-ژل

نوع مقاله : علمی و پژوهشی

نویسندگان

نجمه لاری ¹

شاهرخ آهنگرانی ²

¹ دانشگاه صنعتی سیرجان، بخش مهندسی شیمی و مواد، سیرجان، ایران،

² سازمان پژوهش های علمی و صنعتی ایران، پژوهشکده مواد پیشرفته و انرژی های نو، تهران، ایران.

10.22067/jmme.2025.92000.1184

چکیده

به‌منظور کاهش بازتاب نور و افزایش بهره‌وری سلول‌های خورشیدی، استفاده از پوشش سیلیکا بر سطح شیشه رایج است. با این حال، شکنندگی ذاتی این پوشش‌ها می‌تواند عملکرد مکانیکی آن‌ها را محدود کند. در این پژوهش، پلیمر پلی‌دی‌متیل‌سیلوکسان (PDMS) به‌عنوان ماده‌ای با پیوندهای پلیمری منعطف و خاصیت آب‌گریزی، به‌منظور بهبود خواص مکانیکی و سطحی پوشش‌ها مورد بررسی قرار گرفت. دو رویکرد برای اعمال PDMS ارزیابی شد: نخست، استفاده از آن در فرآیند ساخت سل، و دوم، لایه‌نشانی مستقیم بر روی پوشش سیلیکا. برای تحلیل عملکرد نمونه‌ها، از روش‌های طیف‌سنجی عبوری در ناحیه مرئی-فرابنفش (UV-Vis)، طیف‌سنجی مادون قرمز تبدیل فوریه (FT-IR)، میکروسکوپ الکترونی روبشی (SEM) و آزمون زاویه تماس بهره گرفته شد. نتایج نشان دادند که هر دو نوع پوشش دارای عبور نوری حدود ۹۳٪ هستند که نسبت به شیشه بدون پوشش (۹۰٪) بهبود قابل توجهی دارد. همچنین، زاویه تماس قطره آب با سطح پوشش برابر با ۹۵ درجه اندازه‌گیری شد که نشان‌دهنده آب‌گریزی مطلوب سطح است. این ویژگی ناشی از حضور PDMS بوده و انتظار می‌رود که جذب رطوبت در طول زمان کاهش یافته و خواص نوری پوشش پایدار باقی بماند.

کلیدواژه‌ها

پوشش ضدبازتاب

آبگریز

سیلیکا

پلی دی متیل سیلوکسان

سل-ژل

موضوعات

• متالورژی سطوح و پوشش

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عنوان مقاله English

Effect of polydimethylsiloxane) PDMS (on silica coating produced by sol-gel method

نویسندگان English

najme lari ¹

SHAHROKH AHANGARARNI ²

¹ Department of Chemical and Materials Engineering, Sirjan University of Technology, sirjan, iran.

² Advanced Materials and Renewable Energies Department, Iranian Research Organization for Science and Technology

چکیده English

To reduce light reflection and enhance the efficiency of solar cells, silica coatings are commonly applied to glass surfaces. However, the inherent brittleness of these coatings can limit their mechanical performance. In this study, polydimethylsiloxane (PDMS), a flexible polymer with hydrophobic properties, was investigated to improve both mechanical and surface characteristics of the coatings. Two approaches were evaluated: incorporating PDMS during the cell fabrication process, and directly depositing it onto the silica coating. The performance of the samples was assessed using UV-Visible transmission spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and contact angle measurement using deionized water droplets. The results showed that both types of coatings exhibited approximately 93% light transmittance, which is a significant improvement compared to uncoated glass (90%). Additionally, the contact angle of water droplets on the coated surface was measured at 95°, indicating excellent hydrophobicity. This property is attributed to the presence of PDMS, suggesting that moisture absorption over time will be minimized and the optical performance of the coating will remain stable.

Keywords: Anti-reflective coating, hydrophobicity, silica, polydimethylsiloxane, sol-gel.

کلیدواژه‌ها English

Anti-reflective coating

hydrophobicity

silica

polydimethylsiloxane

sol-gel

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